Question

Someone help me? I have no idea what I'm doing wrong...

A mirror frame in the shape of an oval is shown below. The ends of the frame form semicircles:

Which of the following is the perimeter of the inner edge of the frame?

343.56 inches
289.56 inches
258.78 inches
204.78 inches


I got 204.82... I have no idea what I'm doing wrong.

Answer 1

I got the same thing you did, which probably means that the question rounded the numbers differently. As little as I want to say this, since 204.78 in. is the closest, choose that.

Explanation:

Calculations: (60 * 2) + (27*π): left, straight lines; right, circular parts

Multiply: 120 + 84.823

Add: 204.823 in.